公开(公告)号：JPH0748111A

公开(公告)日：1995-02-21

申请号：JP21227093

申请日：1993-08-04

Applicant: AGENCY IND SCIENCE TECHN

Inventor： UCHIDA KUNIO ,  YUMURA MORIO ,  OSHIMA SATORU ,  KURIKI YASUNORI ,  YATSUSE KIYOSHI ,  IGASAKI FUMIKAZU

IPC: C01B31/02 ,  D01F9/12

Abstract: PURPOSE:To provide a method capable of relatively easily removing carbon impurities from the carbon nanotubes containing the carbon impurities and obtaining the carbon nanotubes in a high quality. CONSTITUTION:The method for separating and purifying the carbon nanotubes comprises finely grinding carbon nanotubes containing carbon impurities into the fine product having an average particle diameter of $0.4 7mum, dispersing the finely ground product in a liquid, centrifuging the dispersion, filtering the formed supernatant containing fine particles having an average particle diameter of

公开(公告)号：JPH06121930A

公开(公告)日：1994-05-06

申请号：JP25974791

申请日：1991-09-11

Applicant: AGENCY IND SCIENCE TECHN

Inventor： KURIKI YASUNORI ,  KAWAMURA MITSUTAKA ,  YUMURA MORIO ,  OSHIMA SATORU ,  IGASAKI FUMIKAZU

IPC: B01J27/051 ,  B01J27/04 ,  B01J37/20 ,  C07B61/00 ,  C07C5/10 ,  C07C13/60 ,  C07C15/27

Abstract: PURPOSE:To provide a method for executing hydrogenation reaction while simultaneously preparing a sulfurization catalyst particulate in a hydrogenation treating reaction. CONSTITUTION:A spherical, indeterminate shaped or the like solid metal having hydrogenation activity such as iron, molybdenum and cobalt is filled into a reactor under a condition of 200-450 deg.C and 1-20 MPa hydrogen pressure, in which hydrogen and sulfur are supplied together with a hydrocarbon such as phenanthrene and hydrogenation treating is executed while simultaneously producing the particulate metal sulfide catalyst by vibrating the packed material.

公开(公告)号：JP2001080912A

公开(公告)日：2001-03-27

申请号：JP25745799

申请日：1999-09-10

Applicant: AGENCY IND SCIENCE TECHN ,  OSHIMA SATORU ,  AGO HIROKI ,  YUMURA MORIO ,  UCHIDA KUNIO ,  IGASAKI FUMIKAZU ,  KURIKI YASUNORI

Inventor： OSHIMA SATORU ,  AGO HIROKI ,  YUMURA MORIO ,  UCHIDA KUNIO ,  IGASAKI FUMIKAZU ,  KURIKI YASUNORI

IPC: C01B31/02 ,  B01J27/043

Abstract: PROBLEM TO BE SOLVED: To industrially advantageously produce carbon nanotubes. SOLUTION: When a carbon-containing material is thermally decomposed in the presence of a catalyst substrate to produce carbon nanotubes, a series of steps, that is, (i) a step for thermally decomposing the carbon-containing material in the presence of the catalyst substrate to form the carbon nanotubes on the substrate, (ii) a step for separating the formed carbon nanotubes from the substrate, (iii) a step for applying and drying a catalyst fluid containing hyperfine catalyst particles on the substrate after the separation of the carbon nanotubes to regenerate the catalyst substrate and (iv) a step for thermally decomposing the carbon-containing material in the presence of the regenerated catalyst substrate to form the carbon nanotubes on the substrate are repeatedly carried out.

公开(公告)号：JP2001062299A

公开(公告)日：2001-03-13

申请号：JP24510399

申请日：1999-08-31

Applicant: AGENCY IND SCIENCE TECHN ,  AGO HIROKI ,  YUMURA MORIO ,  OSHIMA SATORU ,  KURIKI YASUNORI

Inventor： AGO HIROKI ,  YUMURA MORIO ,  OSHIMA SATORU ,  KURIKI YASUNORI

IPC: C01B31/02 ,  B01J23/75 ,  B01J27/043 ,  B01J35/12

Abstract: PROBLEM TO BE SOLVED: To obtain a catalyst liquid used in the synthesis of carbon nanotubes by the thermal decomposition of a carbon-containing material, to obtain a catalytic substrate formed by using the catalytic liquid, to obtain a method for producing the catalytic substrate using the catalytic fluid and to obtain a method for synthesizing carbon nanotubes using the catalytic substrate. SOLUTION: This catalytic liquid for the synthesis of carbon nanotubes comprises a micro-emulsion prepared by dispersing hyperfine catalyst particles for the synthesis of carbon nanotubes in a solvent. The catalytic substrate for the synthesis of carbon nanotubes has hyperfine catalyst particles formed from the catalytic liquid on the surface. A carbon-containing material is thermally decomposed in the presence of the catalytic substrate of form carbon nanotubes on the substrate.

公开(公告)号：JP2000300990A

公开(公告)日：2000-10-31

申请号：JP11727899

申请日：1999-04-23

Applicant: AGENCY IND SCIENCE TECHN

Inventor： MIKI YASUAKI ,  SUGIMOTO GIICHI ,  KURIKI YASUNORI ,  OSHIMA SATORU

IPC: B01J27/047 ,  B01J37/16 ,  C07B61/00 ,  C07C5/10 ,  C07C5/11 ,  C07C5/13 ,  C07C13/47 ,  C07C15/02 ,  C10G45/46

Abstract: PROBLEM TO BE SOLVED: To obtain a new not carried tungsten sulfide catalyst, provide its preparation method and also provide a hydrogenation method for an aromatic hydrocarbon and (or) a condensed polycyclic hydrocarbon. SOLUTION: The not carried tungsten sulfide catalyst containing tungsten sulfide is formed by reduction decomposing an ammonium thiotungstate in an organic solvent, and in a hydrogenation process thereof, the above catalyst is used in a method of hydrogenating hydrocarbon containing an aromatic hydrocarbon and (or) a condensed polycyclic hydrocarbon and forming a hydrocarbon low in the content of aromatic hydrocarbon and (or) a hydrocarbon low in the content of the condensed polycyclic hydrocarbon.

公开(公告)号：JP2000143245A

公开(公告)日：2000-05-23

申请号：JP32084098

申请日：1998-11-11

Applicant: AGENCY IND SCIENCE TECHN ,  PETROLEUM ENERGY CENTER FOUND

Inventor： MIKI YASUAKI ,  SUGIMOTO GIICHI ,  SHIMADA HIROMICHI ,  MIZUKAMI FUJIO ,  OSHIMA SATORU ,  KURIKI YASUNORI ,  YUMURA MORIO ,  MATSUBAYASHI NOBUYUKI ,  SATO KOICHI ,  ARAKI YASUHIRO ,  HONNA KOSAKU

IPC: C01G41/00 ,  B01J27/047 ,  C01G53/00 ,  C10G45/08 ,  C10G47/02 ,  C10G49/04

Abstract: PROBLEM TO BE SOLVED: To provide a production process for various metal sulfides each used as a hydrogenation catalyst having capability of effecting hydrogenation/ring-opening of an aromatic ring and also to provide a hydrogenation catalyst consisting of such a metal sulfide. SOLUTION: This production process for tungsten - chromium - zinc multiple sulfide comprises: adding an ammonium thiotangustate aqueous solution to zinc hydroxychromate hydrate in an amount sufficient to provide a W/(Zn+Cr) atomic ratio of 0.003-0.05; mixing and agitating them, to evaporate water in the resulting mixture and to obtain a solid material; and then, subjecting the solid material to reductive decomposition. The production process for this nickel - tungsten - chromium - zinc multiple sulfide hydrogenation catalyst comprises: adding an ammonium thiotangustate aqueous solution to zinc hydroxychromate hydrate in an amount sufficient to provide a W/(Zn+Cr) atomic ratio of 0.003-0.05 to obtain a mixture; further adding a nickel salt aqueous solution to the mixture in an amount sufficient to provide an Ni/W atomic ratio of

公开(公告)号：JP2000086217A

公开(公告)日：2000-03-28

申请号：JP26731798

申请日：1998-09-05

Applicant: AGENCY IND SCIENCE TECHN ,  OSHIMA SATORU ,  YUMURA MORIO ,  UCHIDA KUNIO ,  IGASAKI FUMIKAZU ,  KURIKI YASUNORI

Inventor： OSHIMA SATORU ,  YUMURA MORIO ,  UCHIDA KUNIO ,  IGASAKI FUMIKAZU ,  KURIKI YASUNORI

IPC: C01B31/02 ,  B01J23/28

Abstract: PROBLEM TO BE SOLVED: To attain a high yield and to enable continuous operation and mass production by decomposing a hydrocarbon at a high temperature on a catalyst comprising metal molybdenum or a metal molybdenum-containing material to deposit carbon nanotubes on the catalyst. SOLUTION: A catalyst comprising metal molybdenum or a metal molybdenum-containing material, preferably a catalyst obtained by supporting metal molybdenum on an inorganic support is put in a reactor and a hydrocarbon is decomposed in the reactor at 800-1,200 deg.C to deposit carbon nanotubes on the catalyst. The catalyst with the deposited carbon nanotubes is discharged from the reactor. The carbon nanotubes are continuously produced by combining the depositing and discharging steps. In other way, a hydrocarbon oil containing the catalyst is spouted into a reactor kept at 800-1,200 deg.C and the hydrocarbon is decomposed to form carbon nanotubes.

公开(公告)号：JPH07237913A

公开(公告)日：1995-09-12

申请号：JP5329094

申请日：1994-02-25

Applicant: AGENCY IND SCIENCE TECHN

Inventor： OSHIMA SATORU ,  YUMURA MORIO ,  UCHIDA KUNIO ,  KURIKI YASUNORI ,  IGASAKI FUMIKAZU

IPC: B01J19/08 ,  B01J19/14 ,  B01J19/24 ,  C01B31/02

Abstract: PURPOSE:To safely produce and recover a fullerene without touching with a human body. CONSTITUTION:A method for producing fullerene comprises using a carbonaceous material and a heat-resistant conductive material as an anode 3 and a cathode 2, respectively, in a container 1, feeding a required electric power between both the electrodes 2,3 from an electric power-feeding source 4 for discharging an arc, and subsequently guiding the produced soot containing the fullerene into a fullerene recovery closed container receiving a solvent for dissolving the fullerene through a conduit 10 in a state stirred with an inert gas discharged from valves 9.